The vision of the school is the fashioning and turning out physically and mentally healthy Sirimavians with a great sense of duty, well disciplined, well mannered with love for the environment and who will portray our national culture and identity.

The school inaugurated on 1st of January 1973 as Stanmore Crescent Primary School and re-named in December 1973 as Sirimavo Bandaranaike Primary Girls School in honor of then Prime Minister Madam Sirimavo R.D. Bandaranaike. From a Primary School, the school developed in to a secondary school and finally to a leading national school within seventeen years of period.

The school has taken giant strides within a short period to enter through the portals of prestige to reach great heights and carve her name in the plaque of achievements as a leading girls school in the island. At present the school shelters over 3000 Sirimavians enjoying educational facilities guided by a staff of about 180 teachers devoted to the task of providing knowledge and skills and assisting the pupils in the development of aptitudes and attitudes that are a prerequisite to character building and good citizenship. Around 45 members of the non-academic staff provide valuable service to keep the school mechanism on the move.